There are total 18 hours or 1080 minutes from 7am to 1am. In words, this duration is equal to eighteen hours or one thousand eighty minutes.
How many hours from
| 1AM to 2AM | 12AM to 5AM | 11PM to 4PM |
| 8PM to 3AM | 4AM to 6PM | 7PM to 5AM |
| 4PM to 8PM | 8AM to 7PM | 11PM to 5PM |
| 8PM to 4PM | 11PM to 5AM | 4AM to 7AM |
| 11PM to 5AM | 9PM to 1AM | 1PM to 11AM |
| 11PM to 12PM | 11AM to 10AM | 5AM to 7PM |
